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16

[CD Ship Mode]
• This mode moves the optical pick-up to the position durable to

vibration. Use this mode when returning the set to the customer
after repair.

Procedure:
1. Press ?/1 button to turn the set ON.
2. Press  CD 1  button and FUNCTION button simultaneously.
3. After the “STANDBY” display blinks six times, a message

“LOCK” is displayed on the fluorescent indicator tube, and the
CD ship mode is set.

[GC Test  Mode]
• This mode is used to check the software version, FL tube, LED,

keyboard and VACS.

Procedure:
1. Press three buttons x ,  DISPLAY , and  CD 2  simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode,

press  CD 1 .  The model number and destination are displayed.

4. Each time  CD 1  is pressed, the display changes starting from

MC version, GC version, CD version, CDD version, CDM ver-
sion, BD version, ST version, TA version, TM version, TC ver-
sion and MD version in this order.

5. Press  CD 2  button, and the key check mode is activated.
6. In the key check mode, the fluorescent indicator tube displays

“K 

0

  J 0  V 0”.  Each time a button is pressed, “K 0” value

increases. However, once a button is pressed, it is no longer
taken into account.
“V  0” value increases like 1, 2, 3 ... if rotating  VOLUME  knob
in “+”  direction, or it decreases like 0, 9, 8 ... if rotating in
“–” direction.

7. Also when  CD 3  is pressed after lighting of all LEDs and FL

tubes, value of VACS appears.

8. To exit from this mode, press three buttons in the same manner

as step 1, or disconnect the power cord.

[MC Test  Mode]
• This mode is used to check operations of the respective sections
of Amplifier, Tuner, CD and Tape.

Procedure:
1. Press the  ?/1  button to turn on the set.
2. Press the three buttons of  x ,  DISPLAY  and  CD 3 simulta-

neously.

3. The “VOLUME” segment flashes.
4. Every pressing of   BASS/TREBLE f  changes the displays in

the order of

5. When the VOLUME control knob is turned clockwise even

slightly, the sound volume increases to its maximum and a mes-
sage “VOLUME MAX” appears for two seconds, then the dis-
play returns to the original display.

6. When the VOLUME control knob is turned counter-clockwise

even slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears for two seconds, then the
display returns to the original display.

7. In the test mode, the default-preset channel is called even when

the TUNER is selected and an attempt is made to call the preset
channel that has been stored in memory, by operating the Shuttle
knob.  (It means that the memory is cleared.)

8. When a tape is inserted in Deck and recording is started, the

input source function selects MD automatically.

9. When  x  button is pressed to stop recording, the Tape (Deck) is

selected and tape is rewound using the  m  button, tape is re-
wound, tape is stops at around the record-starting position and
playback of the recorded portion of the tape is started.  If PAUSE
is inserted even once during recording, tape is rewound to the
position around the PAUSE position and is played back.

10.The cold reset is enforced at the same time.

[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for

instance, when cleaning the optical pick-up.

Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons x , FUNCTION , and  CD 2  simultaneously.
4. The CD service mode is selected.
5. With the CD in stop status, turn the shuttle knob clockwise to

move the optical pick-up to outside track, or turn the shuttle
knob counter-clockwise to inside track.

6. To exit from this mode, perform as follows:

1) Move the optical pick-up to the most inside track.
2) Press three buttons in the same manner as step 2.

Note: • Always move the optical pick-up to most inside track when exit-

ing from this mode.  Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be

chipped.

[CD Ship (Memory Clear) Mode]
• Set the CD ship mode and set the default setup when shipped

from the factory at the next AC power on.

Procedure:
1. Press  ?/1  button to turn the set ON.
2. Select the function  “CD ”.
3. Press three buttons  x  ,  FUNCTION  and  CD 1  simulta-

neously.

4. After the “STANDBY” display blinks six times, a message

“LOCK” is displayed on the fluorescent indicator tube, and the
CD ship mode is set.

[CD/TAPE Repeat 5 Times Limit Release Mode]
• 5 times limit of repeating CD/TAPE is released.

Procedure:
1. Press  ?/1  button to turn the set ON.
2. Press three buttons  x ,  FUNCTION  and  CD 1Z .
3. 5 times limit of repeating CD/TAPE is released.
4. Cold reset is performed at power off.

“GEQ MIN”t“GEQ FLAT”t“GEQ MAX”  

17

3.04 – 6.96 N • m

(31 to 71 g • cm)

(0.43 – 0.98 oz • inch)

0.20 – 0.58 N • m

(2 to 6 g • cm)

(0.02 – 0.08 oz • inch)

3.04 – 6.96 N • m

(31 to 71 g • cm)

(0.43 – 0.98 oz • inch)

0.20 – 0.58 N • m

(2 to 6 g • cm)

(0.02 – 0.08 oz • inch)

6.97 – 14.02 N • m

(71 to 143 g • cm)

(0.98 – 1.99 oz • inch)

0.98 N • m or more

(100 g or more)

(3.53 oz or more)

0.98 N • m or more

(100 g or more)

(3.53 oz or more)

CQ-102C

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

1. Clean the following parts with a denatured alcohol-moistened

swab:

record/playback heads

pinch rollers

erase head

rubber belts

capstan

idlers

2. Demagnetize the record/playback head with a head demagne-

tizer.

3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the rated power sup-

ply voltage unless otherwise noted.

Procedure:
1. Mode : Playback

Mode

FWD

FWD
back tension

REV

REV
back tension

FF/REW

FWD tension

REV tension

Torque meter

Meter reading

1. Demagnetize the record/playback head with a head demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the

parts adjusted.

4. The adjustments should be performed with the rated power sup-

ply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in this

service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit adjust-
ment.)

6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwise

specified.

2. Turn the adjustment screw and check output peaks. If the peaks

do not match for L-CH and R-CH, turn the adjustment screw so
that outputs match within 1 dB of peak.

1

3

Signal

Used for

Tape

P-4-A100

WS-48B

10 kHz, –10 dB

3 kHz, 0 dB

Azimuth Adjustment

Tape Speed Adjustment

18

4. After the adjustments, apply suitable locking compound to the

parts adjusted.

Adjustment Location: Record/Playback/Erase Head

Note: Set the test mode using the following method and begin tape

speed adjustment.

Procedure:
With the power turned ON, press the  x  button,  ENTER/YES
button, and  DISC 3  button simultaneously.
(The “VOLUME” on the fluorescent display tube will blink while
in the test mode.)
To exit the test mode, press the  "/1  button.

1. Insert the WS-48B into deck.
2. Press the  Y  button of deck.
3. Check the reading of frequency counter becomes 3000 

± 15 Hz.

W.RMS (JIS) less than 0.3%
(test tape: WS-48B)

3. Mode: Playback

°

°

°

°

2

1

3

INTRODUCTION
When set to the test mode performed in 

,

when the tape is rewound after recording, the “REC memory

mode” which rewinds only the recorded portion and playback is
set.
This “REC memory mode” is convenient for performing this ad-
justment. During recording, the input signal FUNCTION will auto-
matically switch to VIDEO.
(After recording, press the  m  button without stopping will re-
turn to the position where recording was started.)

1. Press  FUNCTION  button to select VIDEO. (This step is not

necessary if the above test mode has already been set.)

2. Insert a tape into deck, press the  TAPE REC PAUSE/START

button, and then press the  Y button to start recording.

3. Mode: Record

5. Confirm playback the signal recorded in step 2 become adjust-

ment level as follows.
If these levels do not adjustment level, adjust the RV304 (L-CH)
and RV354 (R-CH) on the TC board to repeat steps 3 and 4.

Adjustment level: The playback output of 10 kHz level difference

against 315 Hz reference should be 0 

± 0.5 dB.

4. Mode: Playback

3

1

Ω

RV354

RV304

RV304(Lch),RV354(Rch)
Record Bias

19

INTRODUCTION
When set to the test mode performed in 

, when the tape is rewound after recording, the “REC memory

mode” which rewinds only the recorded portion and playback is
set.
This  “REC memory mode” is convenient for performing this
adjustment. During recording, the input signal FUNCTION will au-
tomatically switch to VIDEO.
(After recording, press the  m  button without stopping will re-
turn to the position where recording was started.)

1. Press  FUNCTION  button to select VIDEO. (This step is not

necessary if the above test mode has already been set.)

2. Insert a tape into deck, press the  TAPE REC PAUSE/START

button, and then press the  Y  button to start recording.

3. Mode: Record

4. Mode: Playback

5. Confirm playback the signal recorded in step 2 become adjust-

ment level as follows.
If these levels do not adjustment level, adjust the RV301 (L-CH)
and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4.

Adjustment level:
CN301 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)

Ω

3

1

CN301

IC301

Record Level (L ch)

RV351

Record Level (R ch)

RV301

Note :

1. CD Block is basically designed to operate without adjustment.

Therefore, check each item in order given.

2. Use LUV-P01 (4-999-032-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10M

Ω impedance.

4. Clean the object lens by an applicator with neutral detergent

when the signal level is low than specified value with the fol-
lowing checks.

Procedure :
1. Connect an oscilloscope to TP (FEO).
2. Connect between TP (FEI) and TP (DVC) ( 1.65 V) by lead

wire.

3. Turn Power switch on.
4. Load a disc (LUV-P01) and actuate the focus search. (In conse-

quence of open and close the disc tray, actuate the focus search)

5. Confirm that the oscilloscope waveform (S-curve) is symmetri-

cal between A and B. And confirm peak to peak level within 2 

±

0.5 Vp-p.

6. After check, remove the lead wire connected in step 2.

Note :

• Try to measure several times to make sure than the ratio

of A : B or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the

brightness to obtain best waveform.

Procedure :
1. Connect an oscilloscope CH1 to TP (RFDC) and CH2 to TP

(RFAC).

2. Turn Power switch on.
3. Load a disc (LUV-P01) and playback.
4. Confirm that oscilloscope waveform is clear and check if RF

signal level is correct or not.

±